tag:blogger.com,1999:blog-35187314.post5248358123737529836..comments2020-10-20T15:13:56.971-04:00Comments on Physics Buzz: Does 5-sigma = discovery?APS Webmasterhttp://www.blogger.com/profile/05951833208918853453noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-35187314.post-84432418917791332013-07-08T03:31:05.682-04:002013-07-08T03:31:05.682-04:00What they are saying 1 sigma and 2sigma is the unc...What they are saying 1 sigma and 2sigma is the uncertainty on the expected background.<br />You can say that to get this much signal events, you need 5 sigma deviation at that point..<br />Now, I think it should be OK. Also, you should look at getting 2 sigma fluctuation is very easy by 5 sigma will be really a bad luck, as it has been mention in the text.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-73306469189816017452013-03-14T13:59:12.062-04:002013-03-14T13:59:12.062-04:00What is the current Sigma?What is the current Sigma?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-15715940087838262902012-12-20T01:05:42.014-05:002012-12-20T01:05:42.014-05:00friend, instead of studying physics, best you stud...friend, instead of studying physics, best you study some statistics. your description of a p-value as the probability of the null hypothesis being correct is a profound error, and one i doubt any statistics textbook in the world fails to take time and effort to dispel.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-58890703575197370782012-07-07T23:54:07.039-04:002012-07-07T23:54:07.039-04:00Does anyone know exactly how many two-photon event...Does anyone know exactly how many two-photon events where seen?Stephen Paul Kinghttps://www.blogger.com/profile/12854545182901504082noreply@blogger.comtag:blogger.com,1999:blog-35187314.post-30509838023257986082012-07-07T21:38:02.439-04:002012-07-07T21:38:02.439-04:00@Eric C. - You're correct, however the "c...@Eric C. - You're correct, however the "certain data" you're talking about is key, because that data gives them a probability percentage that the null hypothesis is correct.<br /><br /><br />So let's say that they get a probability of, oh, I don't know, 0.00006 that the null hypothesis (this is not a higgs boson) is true...wouldn't that indicate that they are 99.99994% sure that the null hypothesis is invalid, and that they have in fact discovered (in this case) the higgs boson?<br /><br /><~ Actually studying physics, instead of just reading wikipedia and spouting it back onto the internet.*Citation requirednoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-24996548269668586232012-07-07T21:03:40.831-04:002012-07-07T21:03:40.831-04:00Daaaaaaaaaaaayuuuuuuuuuuuuuuuuum... BIIIIIIIIIITCH...Daaaaaaaaaaaayuuuuuuuuuuuuuuuuum... BIIIIIIIIIITCHEDâ„˘!MadSpinhttp://madspin.comnoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-81190797088124801252012-07-06T12:21:38.914-04:002012-07-06T12:21:38.914-04:00I understand statistics, but I don't see how t...I understand statistics, but I don't see how this graph could possibly show a five sigma result.<br /><br />http://blogs.discovermagazine.com/badastronomy/2012/07/04/higgs/<br /><br />If the black data points are supposed to be on the red curve, then the green bound cannot possibly be two sigmas; the points have much too much average deviation for that.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35187314.post-15874345647583597172012-07-06T11:53:39.363-04:002012-07-06T11:53:39.363-04:00Even if the experiment is conducted perfectly, the...Even if the experiment is conducted perfectly, there is no inference from 5-sigma to 99.99994 percent confidence. 5-sigma gives you the probability of getting certain data on the assumption that the null hypothesis is true (that it is just a statistical aberration), not the probability of the experimental hypothesis being true.Eric C.noreply@blogger.com